Home / 140,359.62-193,742.40-111,731.78

Finding the Fourth Proportional to 140,359.62, 193,742.40 and 111,731.78

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Solution

The fourth proportional to 140,359.62, 193,742.40 and 111,731.78 is: 154,226.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,359.62 : 193,742.40 = 111,731.78 : x
  2. Step 2: Convert to fraction form
    140,359.62/193,742.40 = 111,731.78/x
  3. Step 3: Cross multiply
    140,359.62x = 193,742.40 × 111,731.78
  4. Step 4: Simplify right side
    140,359.62x = 21,647,183,213.47
  5. Step 5: Solve for x
    x = 21,647,183,213.47/140,359.62
  6. Step 6: Final answer
    x = 154,226.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.